ccna 200 301 syllabus plural or singular nouns

ccna 200 301 syllabus plural or singular nouns.Chapter 5 Routing Protocols*** 05Ip route destination network mask IP address of the next-hop router's direct interface or this router's outgoing interface administrative_distance "permanent" "destination network" is the address of the destination network to go to; "mask " is the subnet mask corresponding to the destination network; whether to use the IP address of the next-hop router's direct interface or the outgoing interface of this router is explained below; administrative_distance is the administrative distance, which is described in the last section of this chapter. A static route that specifies an administrative distance is called a "floating static route." Floating static routes are widely used in link backup situations and are described in the next chapter. will cause the added static route to also disappear from the routing table; with the permanent parameter, the static route will not disappear from the routing table, regardless of what happens unexpectedly. Router R1 adds a static route to 2.220/24 using the following command. .R1(config)#ip route 2.2.2.0255.255.255.255.0 12.1.1.2141 AR1(config)#ip route 2.2.2,0 255.255.255.0 sl/1For the command iproute2.2.2.0255.255.255.255.012.1.1.2, where 222.0 is the destination network to be reached, in the static route you need to add all non-directly connected networks; 255.255.255.0 is the target network corresponding to the subnet mask; 12.1 is the next-hop router directly connected to this router's The first command is to fill in the address of the next hop, not the previous hop of the target network, that is, in the static route, you only need to point out the address of the next hop, as to how to point later, that is the next hop router to consider things. The second command fills in not the IP address, but the outgoing interface of router R1.The result of these two commands is the same, both add a route to the 2.2.2.0/24 segment on R1. There is still a difference as to whether the address filled in is the next hop or the outgoing interface of this router.... Difference 1: The above command references the 1P address of the interface connected to the next-hop router and this router, and the administrative distance of this route is 1; the following command references the outgoing interface of this router, and the administrative distance of this route is 0.. Difference 2: This router egress command can only be used on point-to-point links, such as serial lines in this example. serial lines encapsulate a protocol at the data link layer, such as HDLC (High Level Data Link Control protocol) or PPP (Point-to PointProtocol), these two protocols are used on point-to-point links, where one device sends data and the other receives it; if the serial line is encapsulated with Frame-relay protocol, because the Frame-relay link is by default NBMA (Non-BroadcastMultipleAccess), the serial line is encapsulated with NBMA (Non-BroadcastMultipleAccess). Broadcast Multiple Access), which is also a multiple access link, then it also needs to point to the next-hop router's interface IP address, and cannot be an outgoing interface. If it is a multi-access link like Ethernet, the router will not know which router to send the packet to, and the router will not know which IP address to send it to, so naturally it will not be able to complete the ARP resolution process, and it will not be able to complete the data encapsulation of the ping packet without knowing the MAC address of the next-hop device. Similarly, on a multi-access Frame Relay link, you cannot refer to the outside interface because you do not know exactly which PVC (Permanent VirtualCircuit) to use.The next step is to demonstrate the difference between using the IP address of the outside exit of this router or the next-hop router interface, and incidentally to explain the ProxyThe use of ARP (proxy ARP) is also explained in the video section of this chapter. Use the following command to add a static route to router R1: Bl(config)#ip route 2.2.2.0255.255.255.012.1.1.2 or Sl/___R1(config)tip route 23.1.1.0 255.255.255.0 13.1.1.3 RI(config)lip route 3.3.3.0 255.255.255.0 13.1.1.3 Packets to 23.1.1.0/24 are reachable from both R2 and R3, where the choice is to go from R3 The reason is because, R1